Orgin: Start NFS Heat minimised

Hey i hope somebody can help: Because of updates of the Origin Launcher i will try to set up Need for Speed Heat for playing it in origin offline. So i know in the lutris script from unravel, there is the script line "/start client minimised origin://launchgame/Origin.OFR…50.0000823"Which gives the command to start the game instantly so i can start the game even offline.

I guess you need the OFR Number to start games minimised? . How can i find the OFR number from nfs heat?